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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: 4$x^{2}$ – 3x – 7 Giúp em mn ơi!!!!!!!!!!!!!!!!!!!!!!!

Toán Lớp 8: 4$x^{2}$ – 3x – 7
Giúp em mn ơi!!!!!!!!!!!!!!!!!!!!!!!

Comments ( 2 )

  1.     4x²-3x-7
    = 4x²+4x-7x-7
    = 4x(x+1)-7(x+1)
    = (4x-7)(x+1)

  2. Giải đáp:
    4x²-3x-7 
    =4x²+4x-7x-7 
    =4x(x+1)-7(x+1
    =(4x-7)(x+1)
     cho 5* nhé

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222-9+11+12:2*14+14 = ? ( )

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